Please follow http://www.lrc.fema.gov/starweb/lrcweb/servlet.starweb?path=lrcweb/STARLibraries14.web&search=sub%3d(self%20contained%20breathing%20apparatus%20or%20breathing%20apparatus%20or%20respirators%20or%20respiratory%20protection)%20and%20itype%20not%3defo%20abstract%20and%20(sub%3d(history%20or%20fire%20service%20history)%20or%20tis%3d(history%20or%20historical)).

Please follow http://www.lrc.fema.gov/starweb/lrcweb/servlet.starweb?path=lrcweb/STARLibraries14.web&search=sub%3d(self%20contained%20breathing%20apparatus%20or%20breathing%20apparatus%20or%20respirators%20or%20respiratory%20protection)%20and%20itype%20not%3defo%20abstract%20and%20(sub%3d(history%20or%20fire%20service%20history)%20or%20tis%3d(history%20or%20historical)).